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JOSEPH W. SCHAYER, 0F BOSTON,` MASSACHUSETTS.

Letters Paten-t No. rl8,835, dated June 9, 1868.

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I' TO ALL WHOM'II'I MAY' CONCERN;

Be ithnown that I, JOSEPH W. SCHAYER, of Boston, in the countyrof Suffolk, and. State of Massachusetts, have invented an' Improvement in Wheels for Oil-Stung'Leather; and I do hereby declare thatl the following, taken in connection with the drawings which accompany and form part of this specification, is a description of invention sucient to enable those skilled in the art to practise it.

` My invention relates to the construction of rotary wheels or drums for oil-stufiing leather with reference lto the means of heating them. The common practice is to heat up such a ,wheel by means of burning coals placed within it, or by means of steam-pipes running into or through the wheel. The objection to the first methodis that 'the surfaces of the wheel against which the leather is thrown become heated to such degree as to`burn or injure the leather, and in the second method the steam-pipes often injure the leather in the same manner.

The object of` my improvement is to so construct a stufhng-wheel that the heated surfaces shall be outside of thewheel, or in such position that they heat the chamber, but are beyond the reach of the skins to be stu'ed.; and my invention consists in combining with o. leather-smiling wheel a heating-apparatus placed within a hollow head at the end of the wheel, said head being separated fromthe wheel-chamber by a perforated or openfwork partition. i

f The drawing represents a central vertical section of a stalling-wheel embodying myimprovement.

denotes the rotary chamber in which the skins to be stuffed are placed, this chamber bengprovidedlwith an axial oil-pipe, b, having .a funnel-shaped mouth,'c, and a. strainer, d, oil being thrown into the wheel through this pipe.. f v

The inner curvedsurface of the wheel is studded with pins, f, which take up and drop the skins in the usual manner.A

` At one end of the wheel-is the heater-drum g, tho chamber h of which contains a steam-coil, havinginlet and outlet-ppes, k l, leading to and from the steam-coil.

The chamber h has an outer tight head, 1t, but the opposite head (which is the head o of the wheel a) is Y provided with passages, p, communicating between the chamber a andthe chamber h.

It will `readily-bc secn that this open partition2 m, while sufiicicnt to prevent Vany possible contact of the skins with the heated coil,'permits freea'ccess of the heated air to the stalling-chamber, and enables the interior of the chamber to be kept at a uniform heat, or to be heated to any desirable degree, while the wheel is in l operation.

I am aware that dat steam-heated plates or boxes have been located within a smiling-wheel, adjacent to the heads thereof, butsuch construction does not remove the objection to which I have previously alluded, as these heated plates or'boxe's are not separated Vfrom the smiling-chamber and from contact with the skins.

' `The wheel `is charged with skins througha, door, q. In stuffing-wheels as now constructed, the oil is put into the chamber' when the wheel is stationary, or when the skins lie togctherat the bottom of thc chamber, and the oil fails to be brought into direct contact with all parts of the skins.

. To remedy this, I carry tho`oil-pipe axially into the wheel, the wheel being mounted on e. tubular axle, through whichl the oil-pipe extends, and by this means the oil can be thrown into the wheel while in rotation, an'd whilesthe skins are distributed about its surface, the oil being thereby brought into contact with all the skins, and in such manner as vto cause them to be uniformly subjected tothe action or operation of the oil.

I claim, in combination with a stuing-wheel, a heating-apparatus placed in a chamber, h, auxiliary to and opening into the stuilng-whecl, but separated therefrom by an open-worlgor perforated partition, m, substantially as described.

Y I also claim combining with a rotary stalling-wheel an axial pipe, through which oil may be thrown'into the stalling-chamber while the wheel is in rotation, substantially as described.

` JOSEPH W. SCHAYER. Witnesses:

J.` B. Caesar, FRANCIS Govan. 

